Two pest control companies are running Local Services Ads in the same market.
Company A pays $60 per lead and closes 35% of them. Company B pays $110 per lead and closes 75% of them.
Most owners would tell you Company A is winning. Their leads are nearly half the price.
The math says otherwise. Company A is spending $171 to acquire each customer. Company B is spending $147. Same market, same ad platform, and Company B is acquiring customers for $24 less while their leads cost almost twice as much.
This is the trap most service businesses fall into with LSAs. The metric that's easiest to see isn't the one that actually matters.
Why Cost Per Lead Is the Wrong Number to Optimize
Local Services Ads have made lead generation more transparent than ever: you see exactly what each lead costs, you can dispute the bad ones, and you can adjust your weekly budget on the fly.
That visibility is a gift, but it also creates a temptation: chase the lowest possible CPL and call it a job well done.
The problem is that CPL only measures the cost of generating interest. It tells you nothing about whether that interest turns into revenue. A $60 lead that never closes is more expensive than a $120 lead that becomes a paying customer.
When you optimize purely for CPL, you tend to:
- Cut budget on campaigns that are actually profitable
- Avoid higher-intent lead types that cost more upfront
- Dispute too aggressively, which hurts your LSA ranking
- Miss out on volume during your highest-demand windows
The better question is the one that ties marketing directly to revenue: what does it actually cost to acquire a customer?
Cost Per Acquisition: The Number That Matters
Cost per acquisition connects two things together: what you spend to generate leads, and how often those leads become customers.
The math is simple:
CPA = CPL ÷ Lead-to-Sale Conversion Rate
If your CPL is $100 and you close 70% of leads, your CPA is about $143. That's the real cost of adding a customer to your business.
Once you have that number, you can compare it against what a customer is actually worth, and that's where decisions get easier.
Worked Example: Pest Control (Recurring Revenue)
Pest control is one of the cleanest models for this analysis because the revenue is predictable and recurring.
Let's use a typical pest control plan with quarterly service and monthly billing:
- Initial service: $79
- Monthly billing: $40 ($480 per year after the initial visit)
- First-year value: $79 + $480 = $559
- Two-year customer value (assuming retention): roughly $1,039
Now let's say your LSA campaign is producing:
- CPL: $100
- Close rate: 70%
- CPA: ~$143
You're spending $143 to acquire a customer worth $559 in year one alone, about 26% of first-year revenue spent on acquisition. Stretch that across two years and you're under 14% of customer value, before accounting for referrals or upsells like rodent and mosquito treatments. That's a healthy zone for a recurring service business.
If you push close rate up to 80% (faster response times, better intake scripts, more reviews), your CPA drops to $125. That's the kind of margin improvement that compounds across hundreds of customers per year.
A cheap lead you can't close costs you more than an expensive one you can. Set your target from what a customer is actually worth to you, not from a benchmark borrowed from a business whose math looks nothing like yours.
get startedWorked Example: Roofing (One-Time, High-Ticket)
Roofing flips almost every variable in the pest control example. The leads cost more, close less often, and the customer transaction is one-time but much larger.
A more realistic LSA scenario for a roofing contractor:
- CPL: $175
- Close rate: 22%
- CPA: ~$795
- Average job value: $14,500
Spending $795 to land a $14,500 job is about 5.5% of revenue on acquisition. Even with thinner gross margins than pest control, that's a strong return, and roofing leads also generate referrals, repair work, and storm-season repeat business that can extend the customer relationship beyond a single project.
The point isn't that one industry is better than the other. It's that the target numbers look completely different depending on your business model:
- Pest control might tolerate a $150 CPA on a $559 first-year customer
- Roofing might tolerate a $1,200 CPA on a $14,500 job
A CPL benchmark borrowed from another industry, or even another vertical within home services, will steer you wrong almost every time.
Setting Your Own CPA Target
Instead of guessing at a CPL number, work backward from what a customer is worth.
Start with three numbers from your own business:
- Your average customer value, meaning first-year revenue for recurring services or average job value for one-time work.
- The share of that value you're willing to spend on acquisition, typically 20% to 30% for steady growth, more if you're scaling aggressively and less if margins are tight.
- Your current close rate, or how often LSA leads turn into paying customers.
From there, the math is straightforward. Multiply customer value by your target percentage to get your maximum CPA. Then multiply that maximum CPA by your close rate to get your target CPL.
For the pest control example using first-year value and a 25% target:
- Max CPA: $559 × 25% = $140
- Target CPL: $140 × 70% = $98
For the roofing example with a 10% target:
- Max CPA: $14,500 × 10% = $1,450
- Target CPL: $1,450 × 22% = $319
Now you have a CPL target grounded in your actual economics, not pulled from a benchmark report.
LSA-Specific Levers That Move the Numbers
What makes Local Services Ads different from regular Google Ads is that you have less control over bidding and more control over operational factors. Your CPL and close rate are heavily influenced by things that happen outside the ad platform. That is starting to change as LSAs migrate into Google Ads, which hands you more direct control over bidding, so expect the levers below to sit alongside real bid strategy decisions rather than replacing them. Five of them do most of the work.
- Response time, because LSA leads expect a callback within minutes rather than hours. Slow response hurts both your conversion rate and your LSA ranking, which raises your effective CPL over time.
- Review velocity, since Google's LSA algorithm rewards fresh reviews and businesses with consistent review generation tend to get more lead volume at lower cost.
- Lead disputes, which cut both ways. Google lets you dispute leads that are clearly bad fits, and used carefully they protect your CPA. Used aggressively, they hurt your standing with Google and reduce future lead flow.
- Weekly budget caps, the lever most owners set once and never revisit. Setting yours too low caps how much demand you capture during peak windows, and if your CPA math works, raising the cap usually grows total customers acquired even if CPL ticks up slightly.
- Intake scripting, which gets the least attention and often matters the most. A trained CSR closing 75% of LSA calls is worth far more than a chatbot or voicemail closing 30%.
The cheapest way to lower CPA is usually improving what happens after the lead comes in, rather than driving CPL down.
Why CPL Trends Matter More Than Static Targets
LSA costs aren't static. Pest control CPLs spike in spring and summer. Roofing CPLs surge after storm events. Lawn care follows weather patterns that vary by region.
A fixed CPL target will lead you to pull back exactly when you should be leaning in. During peak demand:
- CPL often rises because more competitors are bidding
- Total available leads often rises faster than CPL
- Close rates often improve because intent is higher
The right move during peak season is usually to raise budget caps and accept higher CPL, because total customers acquired goes up even as cost per lead does. As long as CPA stays inside your guardrail, you're capturing growth that competitors are leaving on the table.
A Simple Framework You Can Apply This Week
If you want to clean up your LSA strategy, work through it in this order:
- Calculate your true customer value, including reasonable retention and referral assumptions.
- Set a maximum CPA based on what percentage of that value you're willing to spend.
- Back into a CPL target using your actual close rate.
- Track CPA weekly, rather than reviewing CPL on its own at the end of the month.
- Adjust budget caps and disputes based on whether you're inside your CPA guardrail, not on whether CPL is hitting an arbitrary number.
The businesses that grow fastest with LSAs are the ones that know exactly what a customer is worth and how much they can spend to get one, not the ones running the lowest CPL.
Want Help Running These Numbers on Your LSA Account?
If you're not sure what your real CPA looks like, or you suspect you're leaving demand on the table during peak season, we can audit your LSA performance and show you where the math actually lands.
Reach out through our contact page or call (207) 813-4735 to talk through your situation.
